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http://dx.doi.org/10.4283/JMAG.2011.16.4.431

Soft Magnetic Properties of Ring-Shaped Fe-Co-B-Si-Nb Bulk Metallic Glasses  

Ishikawa, Takayuki (Department of Machine Intelligence and Systems Engineering, Faculty of Systems Science and Technology, Akita Prefectural University)
Tsubota, Takahiro (Department of Machine Intelligence and Systems Engineering, Faculty of Systems Science and Technology, Akita Prefectural University)
Bitoh, Teruo (Department of Machine Intelligence and Systems Engineering, Faculty of Systems Science and Technology, Akita Prefectural University)
Publication Information
Journal of Magnetics / v.16, no.4, 2011 , pp. 431-434 More about this Journal
Abstract
The reduction of the Nb content in the $(Fe_{0.75}B_{0.20}Si_{0.05})_{96}Nb_4$ bulk metallic glass (BMG) has been studied. The glass-forming ability (GFA) is reduced by decreasing the Nb content, but it can be enhanced by replacing partially Fe by Co. Furthermore, the saturation magnetization of the $(Fe_{0.8}Co_{0.2})_{76}B_{18}Si_3Nb_3$ BMG is 1.35 T, being with 13% larger than that of the base alloy $(Fe_{0.75}B_{0.20}Si_{0.05})_{96}Nb_4$. $(Fe_{0.8}Co_{0.2})_{76}B_{18}Si_3Nb_3$ BMG exhibits slightly larger $B_{800}$ (the magnetic flux density at 800 A/m) and smaller core losses (20%-30%) compared with the commercial Fe-6.5 mass% Si steel.
Keywords
bulk metallic glasses; soft magnetic properties; magnetization; coercivity; permeability; core losses;
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